Boost.Compatibilty library

This library provides workarounds which allow the other Boost
libraries to be used on otherwise non-conforming platforms. We hope that
it will be possible to remove this library at some time in the future as
standard library suppliers become more conforming.

Missing C++ standard library CXX headers (e.g <cstdio>)
workaround

The Python script: generate_cpp_c_headers.py creates a
full set of C++ C header files (e.g. <cstdio>) that are missing on
some platforms. The header files created by this script reside in the
directory boost/compatibility/cpp_c_headers.
To use the header files, add this directory to the include file search
path. For example:

cxx -I/usr/local/boost/boost/compatibility/cpp_c_headers ...

Supported platforms are:

Compaq Alpha, RedHat 6.2 Linux, Compaq C++ V6.3 (cxx)

Compaq Alpha, Tru64 Unix V5.0, Compaq C++ V6.2 (cxx)

Silicon Graphics, IRIX 6.5, MIPSpro Compilers: Version 7.3.1.1m
(CC)

There are more powerful alternatives to using the Boost.Compatibility
library CXX headers, e.g. STLport
or
ISOCXX. However, in contrast to these alternatives, the
generate_cpp_c_headers.py script is very light-weight (less than
100 non-comment lines of Python code), much less ambitious, significantly
easier to maintain and therefore more suitable as an interim
workaround.

Several Boost libraries require the standard library's <limits>
header, yet this header is not always supplied by non-conforming
compilers and libraries. Header boost/limits.hpp simply includes the
standard library <limits> header if available, otherwise includes
boost/detail/limits.hpp.
BOOST_NO_LIMITS from boost/config.hpp
is used to determine <limits> availability.